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GM LS Legacy EFI

  • Shop MSD Atomic EFI LS parts and accessories at Holley. Explore the 90mm mechanical LS throttle body, TPS/IAC kit and Atomic LS1/LS6 installation kit for your compatible LS engine setup.

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  • Shop legacy Holley Terminator EFI kits, replacement parts and accessories. Explore LS MPFI kits, ECUs, wiring harnesses, MAP and air temperature sensors, plus LCD touchscreens for compatible Terminator EFI systems.

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Items 1 - 7 of 7 Items
  • TPS/IAC Kit for LS Throttle Body
    MSD
    TPS/IAC Kit for LS Throttle Body For LS Throttle Body.
    Part# 2942

    In Stock

    $138.95
  • Main Engine Harness for 24x LS w/ TBI
    Holley EFI
    Main Engine Harness for 24x LS w/ TBI Used with 24x/1x Gen 3 LS with Terminator Throttle Body Fuel Injection
    Part# 558-111
    Free Shipping

    In Stock

    $749.95
  • Atomic LS Throttle Body 90mm
    MSD
    Atomic LS Throttle Body 90mm 90mm Mechanical throttle body for LS engines.
    Part# 2940
    Free Shipping

    In Stock

    $1,065.95
  • Atomic LS1/LS6 Installation Kit
    Clearance
    MSD
    Atomic LS1/LS6 Installation Kit This kit complements the Master Kits and provided the necessary brackets and injector connectors to complete and install for LS1/LS6 and LS Trucks.
    Part# 2955

    In Stock

    $237.95
  • Terminator LS MPFI Kit
    Holley EFI
    Terminator LS MPFI Kit GM LS2/LS3 Engines and 2007 to current 4.8/5.3/6.0 Truck Engines with 58x crank reluctor - with DRIVE-BY-WIRE & TRANSMISSION CONTROL, No Laptop Required, 3.5" Touchscreen Included
    Part# 550-613
    Free Shipping

    In Stock

    $4,649.95
  • Terminator LS MPFI Kit
    Holley EFI
    Terminator LS MPFI Kit 1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor, No Laptop Required, 3.5" Touchscreen Included
    Part# 550-614
    Free Shipping

    In Stock

    $2,949.95
  • Terminator LS MPFI Kit
    Holley EFI
    Terminator LS MPFI Kit 1997-2007 4.8/5.3/6.0 Truck Engines with 24x crank reluctor - with DRIVE-BY-WIRE, No Laptop Required, 3.5" Touchscreen Included
    Part# 550-615
    Free Shipping

    In Stock

    $4,349.95
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GM LS Legacy EFI

Shop legacy EFI systems, replacement parts and accessories at Holley. Explore components for Pro-Jection, Terminator EFI, Atomic EFI, and more, including sensors, wiring harnesses, throttle bodies, and service parts for existing fuel injection setups.